24 Aug
2016
24 Aug
'16
9:01 p.m.
Hey hey everyone,
I've looked more into this problem and found that JACK will start by using
between one and two percent of the CPU, but will gradually require more. After
a day JACK's CPU usage stands at about 65-85%.
Usage: currently only mpv (multimedia player, completely shut down after every
use). No persisting audio connections, no other realtime and CPU hungry
applications.
JACK Version: 0.121.3
Kernel Version: 3.9.0-rc6 SMP PREEMPT
CPU scheduling/scaling_governor: powersave
CPU setting: 800MHz single-core (of a 3GHz quadcore)
Underlying soundcard device: ALSA multi with two MAudio Delta 1010 LT cards,
sync'ed via S/PDIF.
JACK commandline:
jackd --timeout 4500 -R -d alsa -C cdelta -P pdelta -r 48000 -p 256 -z shaped
short-time load average: 0.47 (decreasing for longer periods).
If more information or experimentation, to identify the issue, is necessary,
please let me know.
Thank you for any help and hints in the right direction.
Ta-ta,
----
Ffanci
* Homepage: https://freeshell.de/~silvain
* Twitter: http://twitter.com/ffanci_silvain
* GitHub: https://github.com/fsilvain
24 Aug
24 Aug
9:09 p.m.
First of all,please at least upgrade to 0.124.X
On Wed, Aug 24, 2016 at 3:01 PM, Ffanci Silvain <silvain(a)freeshell.de>
wrote:
Hey hey everyone,
I've looked more into this problem and found that JACK will start by using
between one and two percent of the CPU, but will gradually require more.
After a day JACK's CPU usage stands at about 65-85%.
Usage: currently only mpv (multimedia player, completely shut down after
every use). No persisting audio connections, no other realtime and CPU
hungry applications.
JACK Version: 0.121.3
Kernel Version: 3.9.0-rc6 SMP PREEMPT
CPU scheduling/scaling_governor: powersave
CPU setting: 800MHz single-core (of a 3GHz quadcore)
Underlying soundcard device: ALSA multi with two MAudio Delta 1010 LT
cards, sync'ed via S/PDIF.
JACK commandline:
jackd --timeout 4500 -R -d alsa -C cdelta -P pdelta -r 48000 -p 256 -z
shaped
short-time load average: 0.47 (decreasing for longer periods).
If more information or experimentation, to identify the issue, is
necessary, please let me know.
Thank you for any help and hints in the right direction.
Ta-ta,
----
Ffanci
* Homepage: https://freeshell.de/~silvain
* Twitter: http://twitter.com/ffanci_silvain
* GitHub: https://github.com/fsilvain
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
9:50 p.m.
Paul Davis, Aug 24 2016:
First of all,please at least upgrade to 0.124.X
So sorry, I hadn't realised that jack1 was still actively developed. I'm on
it.
...
Ta-ta,
----
Ffanci
* Homepage: https://freeshell.de/~silvain
* Twitter: http://twitter.com/ffanci_silvain
* GitHub: https://github.com/fsilvain
10:14 p.m.
jack1 has seen more development in the last 2 years than jack2.
jack1 is not "dead" nor is it "old". jack1 and jack2 are alternatives
to
each other. most linux distributions chose jack2 as the default because of
the integration with PulseAudio.
On Wed, Aug 24, 2016 at 3:50 PM, Ffanci Silvain <silvain(a)freeshell.de>
wrote:
Paul Davis, Aug 24 2016:
First of all,please at least upgrade to 0.124.X
So sorry, I hadn't realised that jack1
was still actively developed. I'm
on it.
...
Ta-ta,
----
Ffanci
* Homepage: https://freeshell.de/~silvain
* Twitter: http://twitter.com/ffanci_silvain
* GitHub: https://github.com/fsilvain
9:25 p.m.
...and you were never in trouble!
On Wed, 24 Aug 2016, Ffanci Silvain wrote:
Hey hey everyone,
I've looked more into this problem and found that JACK will start by using
between one and two percent of the CPU, but will gradually require more.
After a day JACK's CPU usage stands at about 65-85%.
Usage: currently only mpv (multimedia player, completely shut down after
every use). No persisting audio connections, no other realtime and CPU hungry
applications.
JACK Version: 0.121.3
Kernel Version: 3.9.0-rc6 SMP PREEMPT
CPU scheduling/scaling_governor: powersave
CPU setting: 800MHz single-core (of a 3GHz quadcore)
Underlying soundcard device: ALSA multi with two MAudio Delta 1010 LT cards,
sync'ed via S/PDIF.
JACK commandline:
jackd --timeout 4500 -R -d alsa -C cdelta -P pdelta -r 48000 -p 256 -z shaped
short-time load average: 0.47 (decreasing for longer periods).
If more information or experimentation, to identify the issue, is necessary,
please let me know.
Thank you for any help and hints in the right direction.
Ta-ta,
----
Ffanci
* Homepage: https://freeshell.de/~silvain
* Twitter: http://twitter.com/ffanci_silvain
* GitHub: https://github.com/fsilvain
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
25 Aug
25 Aug
12:06 a.m.
sorry wrong email!
On Wed, 24 Aug 2016, Karen Lewellen wrote:
...and you were never in trouble!
On Wed, 24 Aug 2016, Ffanci Silvain wrote:
Hey hey everyone,
I've looked more into this problem and found that JACK will start by using
between one and two percent of the CPU, but will gradually require more.
After a day JACK's CPU usage stands at about 65-85%.
Usage: currently only mpv (multimedia player, completely shut down after
every use). No persisting audio connections, no other realtime and CPU
hungry applications.
JACK Version: 0.121.3
Kernel Version: 3.9.0-rc6 SMP PREEMPT
CPU scheduling/scaling_governor: powersave
CPU setting: 800MHz single-core (of a 3GHz quadcore)
Underlying soundcard device: ALSA multi with two MAudio Delta 1010 LT
cards, sync'ed via S/PDIF.
JACK commandline:
jackd --timeout 4500 -R -d alsa -C cdelta -P pdelta -r 48000 -p 256 -z
shaped
short-time load average: 0.47 (decreasing for longer periods).
If more information or experimentation, to identify the issue, is
necessary, please let me know.
Thank you for any help and hints in the right direction.
Ta-ta,
----
Ffanci
* Homepage: https://freeshell.de/~silvain
* Twitter: http://twitter.com/ffanci_silvain
* GitHub: https://github.com/fsilvain
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
2:12 a.m.
On Wed, 24 Aug 2016, Ffanci Silvain wrote:
Hey hey everyone,
I've looked more into this problem and found that JACK will start by using
between one and two percent of the CPU, but will gradually require more.
After a day JACK's CPU usage stands at about 65-85%.
Usage: currently only mpv (multimedia player, completely shut down after
every use). No persisting audio connections, no other realtime and CPU hungry
applications.
$ uptime
16:52:06 up 25 days, 19:50, 16 users, load average: 1.39, 0.82, 0.43
DSP with Ardour running 3.6 to 3.8% (only two plugins fluidsynth and
reasonable synth just now)
i5 at 3.4Gh, 8Gram, FF has over 10 tabs open. Cpu on all cores less than
10%. PCU gov perfomance... only 1 ice1712 card here. Oh you have 256, cpu
at 256 is the same, DSP is 7.7%
JACK Version: 0.121.3
Kernel Version: 3.9.0-rc6 SMP PREEMPT
CPU scheduling/scaling_governor: powersave
CPU setting: 800MHz single-core (of a 3GHz quadcore)
While I have run at 800Mh for a long time (on a single core atom of all
things) with no xruns, I was using the userspace cpu gov. Any speed change
(in the down direction) gives me xruns. Of course CPU usage and DSP go up
as CPU speed goes down. WHen jack first gets started powersave will give
cpu close to full speed, as jack idles, cpu speed goes down and cpu used
to keep up with jack's unchanging needs goes up.
Set Cpu to performance. Based on my CPU temperature readings, power use
doesn't change much.
--
Len Ovens
www.ovenwerks.net
7:14 a.m.
Len Ovens, Aug 25 2016:
...
DSP with Ardour running 3.6 to 3.8% (only two plugins
fluidsynth and
reasonable synth just now)
Just curious: DSP? Do you have an extra board?
...
CPU speed goes down. WHen jack first gets started
powersave will give cpu
close to full speed, as jack idles, cpu speed goes down and cpu used to keep
up with jack's unchanging needs goes up.
This is something I hadn't
considered, seeing that 800MHz is the lowest speed setting for my CPU.
Right now JACK 0.125.0rc1 idles at 17-18% CPU and has done so since last night. If that
doesn't hold, I will try changing the govenor.
Thank you all, for your help and guidance.
...
Ta-ta,
----
Ffanci
* Homepage: https://freeshell.de/~silvain
* Twitter: http://twitter.com/ffanci_silvain
* GitHub: https://github.com/fsilvain
3:16 p.m.
On Thu, 25 Aug 2016, Ffanci Silvain wrote:
Len Ovens, Aug 25 2016:
...
No, not beyond the Delta66 itself. There are two measures of system
busy-ness of interest in an audio system. CPU use just tells how busy the
CPU is. How much time is it idle and how much time is it working. DSP is a
measure of how much time is left after the last jack client has finished
in one buffer cycle. DSP is more important than CPU use for audio work. If
DSP spikes over 100% you have an xrun. With a realtime kernel CPU might
hit 100% with no ill affect on audio. (running an audio system with cpu at
100% is not recomended) If you are using Qjackctl, there will be a yellow
RT#% (where # is some number) This is DSP use. Ardour also shows this
number right at the top. CPU use is best shown with htop.
--
Len Ovens
www.ovenwerks.net
DSP with Ardour running 3.6 to 3.8% (only two
plugins fluidsynth and
reasonable synth just now)
Just curious: DSP? Do you have an extra board?
3040
days inactive
3041
days old
linux-audio-user@lists.linuxaudio.org
8 comments
4 participants
participants (4)
-
Ffanci Silvain -
Karen Lewellen -
Len Ovens -
Paul Davis